I'm not sure how much light will be shed based on forensics, unless there is a bomb of some sort (i.e. Martin was on his knees and Zimmerman standing).

That's exactly what I'm talking about. It doesn't even have to be that dramatic a disparity to take apart the defense. A simple lack of powder burns on Travon's clothing would destroy Zimmerman's entire narative. Zim claims he was on the losing side of a full mount when the gun went off. Balistics will corroborate this if true.

Without a bonafied eye witness, we have only forensics to establish the hard facts.

Zimmerman also stated in the interview that he was neither a racist or a murderer. He said that he had no regrets: not for getting out of his car to follow Martin that night, not for having a gun on him or for firing the single, fatal shot into Martin's chest.

"I feel that it was all God's plan and not for me to second-guess it or judge it," Zimmerman said.

The man accused of killing an unarmed Florida teenager dropped plans for a second television interview after the ABC network would not provide a month of "shelter and security" for his family, his attorney said Thursday.

George Zimmerman had been in talks with ABC's show "The View" about an interview to be aired Thursday, a day after he sat down with Fox News commentator Sean Hannity. One of the show's hosts, Barbara Walters, told viewers Thursday that she had been forced to scrub the plans when Zimmerman demanded "a condition that we could not agree to."

Walters would not specify the demand, but Zimmerman's lawyer, Mark O'Mara, told CNN that Zimmerman "asked for shelter and security for his wife for a month. They said they could not do that." Zimmerman had not yet agreed to sit for questions from ABC, O'Mara said, and "decided to wait on doing another interview."

But near the end of Thursday's show, Walters said Zimmerman called in and offered to talk. She refused.

"If you could not do the interview yesterday, I don't think we should do a quick one today," she said to applause from the studio audience. "If in the future you feel different, we will consider it."